Ilgrim

Amstrad CPC 464/6128 Programming Resources

A collection of information gathered from various resources into a single document to be able to program for Amstrad CPC 464/6128 machines.

Hardware

CPC has the following components on the mainboard:

• Z80
• CRTC HD6845

Ilgrim

How to unbrick an Amazon Kindle Paperwhite™

This guide instructs you in how to unbrick an Amazon Kindle Paperwhite. The consequences of following it are your own responsibility. This method (opening the Kindle and using the serial interface) should be a last resort and should only be considered if other methods fail

The Guide

0. Pry open Kindle using a prying tool
1. Unscrew the screen and remove it from the base. Note that there's a screw hidden under the adhesive at the top in the middle
2. Solder tin wire to serial ports on the bottom
3. Attach tin wire to USB TTY device (order is ground, RX, TX, from the kindle's perspective, where GND is the smallest pad) and plug USB TTY device into your computer
4. Open Putty on your computer in serial mode, with the serial port specified as your USB device and baud configured to 115200

Ilgrim

DIY T12 Soldering Station with Mini STC T12 Controller

So i have build myself an soldering station to replace my Dekko "Ol' reliable" 40w hand solder, it works and do the job, but it takes forever to meet the heat temperature. So i build a new one with around 300k IDR

The controller is Mini STC T12 rev 2.1 that can be found from ShopeeID around 130k IDR, or on aliexpress at around 8 USD. I pick the LED version since it's way more cheaper than OLED and STM32 edition, and i don't need any features other than variable temperature and standby mode.

For the handle, i got it from Tokopedia at around 130k IDR. This handle is for Hakko FX9501, but i only need the handle and the pin inside to connect with the T12 solder tips.

For the tips, i got it from aliexpress too, find cheap tips and pay it along with the voucher, so i just need to pay around 4 USD for 3pcs T12 soldering tips.

Ilgrim

/*---------------------------------------------------------------------*/
/* --- STC MCU Limited ------------------------------------------------*/
/* --- To be downloaded from the ISP chip (limited STC15 series), for example using the main chip -----------------*/
/* --- Mobile: (86)13922805190 ----------------------------------------*/
/* --- Fax: 86-755-82905966 -------------------------------------------*/
/* --- Tel: 86-755-82948412 -------------------------------------------*/
/* --- Web: www.STCMCU.com --------------------------------------------*/
/* If you want to use this code in the program, in the program, using the information and procedures specified macro crystal technology   */
/* If you want to quote this code in the article, please indicate in the article the use of information technology and procedures Wang Jing   */
/*---------------------------------------------------------------------*/

Ilgrim

## Tested the blue pill on 10/09/2018
## 1. install pre-requisites
sudo add-apt-repository ppa:team-gcc-arm-embedded/ppa
sudo apt update
sudo apt install gcc-arm-embedded
# If it reports error message of conflict to gcc-arm-none-eabi, which is likely if upgrading from 4.x to 5+, please uninstall it first with:
# "sudo apt-get remove gcc-arm-none-eabi"

sudo apt -y install lib32z1 lib32ncurses5 lib32bz2-1.0 

Ilgrim

This is a collection of code snippets for various features on the STM8S family microcontrollers (specifically the STM8S003F3). These are written against the STM8S/A SPL headers and compiled using SDCC.

Some of this controller's functions aren't particularly intuitive to program, so I'm dumping samples for future reference here. These are based on the STM8S documentation:

• STM8003 datasheet
• STM8S reference manual

Run at 16MHz

Ilgrim

//////////////////////////////////////////////////
//
// EDIT: Warning, this doesn't seem to work well.
//
//////////////////////////////////////////////////

Ilgrim

// Adapted from: https://gist.github.com/miguelmota/3ea9286bd1d3c2a985b67cac4ba2130a

package rsacrypto

import (
	"crypto/rand"
	"crypto/rsa"
	"crypto/sha512"
	"crypto/x509"
	"fmt"

Ilgrim

;*************************************************
;* Create and move a simple sprite x,y           *
;*************************************************

		processor 6502
		org $1000
		
;helpful labels
CLEAR = $E544
GETIN  =  $FFE4

Ilgrim

How to mount a qcow2 disk image

This is a quick guide to mounting a qcow2 disk images on your host server. This is useful to reset passwords, edit files, or recover something without the virtual machine running.

Step 1 - Enable NBD on the Host

modprobe nbd max_part=8